Model 70 left-handed ultramag follower

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I'm looking for a model 70 left-handed ultramag follower. I have a Montana Rifle Co V2 that i had converted from 375 h&H to 375 wby and I need to swap the follower out. MRC is out of business, apparently, so I can't get a hold of them for one and I can't seem to find one anywhere else. A little help is needed.
 

ODB

WKR
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Just curious why you’d need a new follower due to a chamber alteration? Or did you mean going from a 375 h&h to 378 Weatherby?
 
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OP
Alaskanopolis
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I went from H&H to 375 weatherby and it doesn't feed worth a shit anymore. I also put a window box mag in so I can hold four in the box again. My buddy has a right-handed model he did the same thing with and the ultramag follower tuned it up. Finding a left-handed ultramag follower has been difficult.
 

ODB

WKR
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Feeding is a many-headed beast. Did you try your friends follower to make sure that’s the only issue? The rifle shouldn’t really care what side it feeds from. If it holds 4 down, two rounds are feeding from each side anyway, doesn’t matter if it’s starting on the left or right side. I’m guessing the front of the round does not exit the max box soon enough? If MRCs are like modern model 70s, the feed lips on the max box are critical for proper feeding.
 
OP
Alaskanopolis
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Feeding is a many-headed beast. Did you try your friends follower to make sure that’s the only issue? The rifle shouldn’t really care what side it feeds from. If it holds 4 down, two rounds are feeding from each side anyway, doesn’t matter if it’s starting on the left or right side. I’m guessing the front of the round does not exit the max box soon enough? If MRCs are like modern model 70s, the feed lips on the max box are critical for proper feeding.
My gunsmith is actually the one messing with it and he tells me that’s what he needs.
 

swehrman

Lil-Rokslider
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A left handed 300 ultra mag does seem like a rare beast. Have you contacted Winchester to see if they actually made a left handed 300 ultra mag?

Here is a standard 300 ultra mag follower. Once suggestion would be to buy this, and have someone 3D print a follower that is a mirror image.


-- Scott
 
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As a nerd of most rifles Left Handed....and owner of a few Left Handed Winchester 70s...I can tell you with REASONABLE certainty....that if any Ultra Mags left the plant they were Custom Shop only or in numbers fewer than 50.

I am quite certain there is no such thing as a Left Handed follower. I'll look in my LH 338 Win when I get home to help you out.

Not sure Winchester rolled out many Ultra Mags in any configuration in the Classic 70 action.

MRC put out way more Ultras than Winchester. Much more luck obtaining an MRC part I believe.
 

ODB

WKR
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A left handed 300 ultra mag does seem like a rare beast. Have you contacted Winchester to see if they actually made a left handed 300 ultra mag?

Here is a standard 300 ultra mag follower. Once suggestion would be to buy this, and have someone 3D print a follower that is a mirror image.


-- Scott


I don’t believe they ever made a LH RUM. And it doesn’t matter if the follower is left handed or not, the first Round in will just load toward the sidewall versus the ejection port. I know a gun builder who intentionally builds followers for his rifles to load this way. the magazine and underside of the action are symmetrical.
 

ODB

WKR
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As a nerd of most rifles Left Handed....and owner of a few Left Handed Winchester 70s...I can tell you with REASONABLE certainty....that if any Ultra Mags left the plant they were Custom Shop only or in numbers fewer than 50.

I am quite certain there is no such thing as a Left Handed follower. I'll look in my LH 338 Win when I get home to help you out.

Not sure Winchester rolled out many Ultra Mags in any configuration in the Classic 70 action.

MRC put out way more Ultras than Winchester. Much more luck obtaining an MRC part I believe.

can you grab one of your LH Handed model 70s and look at the follower,,, does it load the first round toward the sidewall or ejection port? thanks
 

swehrman

Lil-Rokslider
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I don’t believe they ever made a LH RUM. And it doesn’t matter if the follower is left handed or not, the first Round in will just load toward the sidewall versus the ejection port. I know a gun builder who intentionally builds followers for his rifles to load this way. the magazine and underside of the action are symmetrical.

I couldn't find any thing that suggests there's such a thing as a left hand follower either. If they made them, none of the major online gun part vendors sell them as spare parts, even for the common calibers like 30-06.

-- Scott
 
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Realize this. But it's recent. May still be one light left on in the Shop. And re-stating that there were thousands more Left Handed followers shipped out the MRC doors than Winchester's. You'll have better luck searching for a MRC follower.
 

ODB

WKR
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Left handed Win 70 in 338 Win MagView attachment 159494

Excellent, many thanks.

As i thought, your first round in will be to the right, just the same as a right hand rifle, meaning they used the same follower for left and right hand rifles.

I don’t think Winchester ever made a LH RUM, and if they did, they would have done the same as they did here - use a “RH” follower. The rifle doesn’t care what side it feeds from first, it has to feed from both sides. And the follower only does it’s work positioning that first round. The other rounds stack on cartridges. Thinking more on this, I bet what’s happening is the big shoulders on those 375 Wbys are getting pinched inside the box and he needs the wider RUM follower to get them Unpinched, basically to follow Mauser’s rule regarding mag box dimensions and how the rounds should stack (in a sideways triangle).

I looked in the old Win catalogs last night and RUMs were very short-lived because the WSMS came out. LH rifles went to 300 Win, then to 375 in then Safari series, didn’t see a single mention of a LH RUM.
 
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